For typical applications of the gradiomanometer in laboratory two-phase flows, we analyse major c... more For typical applications of the gradiomanometer in laboratory two-phase flows, we analyse major contributions to the measured differential pressure. Application for estimation of the fluid-phase volume fraction is valid only when terms representing friction and differential momentum flux (acceleration) are negligible or can be corrected for. The importance of friction is commonly recognized, but that of acceleration in developing flows is less so. Order-of-magnitude estimates of friction and acceleration are given for typical cases of (i) air/water and (ii) kerosene/water two-phase flows. We point out that the acceleration term could be significant in developing liquid/liquid flows of weak density contrast. For the liquid/liquid case, it is therefore important that measurements be made in a fully developed region of the flow. Results for several multi-phase flows are compared with data from local optical fibre probes in a series of companion articles.
Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious... more Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious agent in tineas and other skin diseases. Drug therapy is considered to be limited in the treatment of such infections, mainly due to low accessibility of the drug to the tissue attacked and development of antifungal resistance in these microorganisms. In this context, Photodynamic Therapy is presented as an alternative. Evaluate, in vitro, the photodynamic activity of four derivatives of Protoporphyrin IX by irradiation with LED 400 nm in T. rubrum. Assays were subjected to irradiation by twelve cycles of ten minutes at five minute intervals. Photodynamic action appeared as effective with total elimination of UFCs from the second irradiation cycle. Studies show that the photodynamic activity on Trichophyton rubrum relates to a suitable embodiment of the photosensitizer, which can be maximized by functionalization of peripheral groups of the porphyrinic ring.
Copyright 2008, Society of Petroleum Engineers This paper was prepared for presentation at the 20... more Copyright 2008, Society of Petroleum Engineers This paper was prepared for presentation at the 2008 SPE Annual Technical Conference and Exhibition held in Denver, Colorado, USA, 2124 September 2008. This paper was selected for presentation by an SPE program ...
International seminars in surgical oncology : ISSO, Jan 7, 2006
This article is a case report of a high grade, radio-induced, breast malignant fibrous histiocyto... more This article is a case report of a high grade, radio-induced, breast malignant fibrous histiocytoma (undifferentiated high grade pleomorphic sarcoma), which developed in a 44-year old female, seven years after breast conservative surgery and radiotherapy for a T1N0M0 invasive left breast ductal carcinoma. The sarcoma presented as a fast growing tumour, 9.5 cm in the largest diameter, with skin, left breast, chest wall muscle and rib invasion. Neoadjuvant chemotherapy was performed with epirubicin and ifosfamide. Extended radical surgery according to oncological standards and soft tissue reconstruction were carried out. Despite bad prognostic features of high grade and large invasive sarcoma, the patient is currently, after 44 months of follow up, without local recurrence, or metastases, exceeding the 12.8-month mean recurrence period and mortality rate for these tumours larger than 8.1 cm (+/- 1.2 cm) as described in the literature.
ABSTRACT The integral transform method is employed for the hybrid numerical-analytical solution o... more ABSTRACT The integral transform method is employed for the hybrid numerical-analytical solution of two-dimensional, steady-state heat conduction within extended surfaces of variable longitudinal profile and temperature dependent thermal conductivity. Numerical results are then obtainable with automatic accuracy, allowing for the establishment of benchmark results and for the validation of approximate solutions. Convergence rates are illustrated for longitudinal fins with trapezoidal and parabolic profiles, and for different values of the governing parameters, Biot number and aspect ratio. In addition, the classical one-dimensional approximate solutions are critically examined for these typical non-straight profiles, and the applicability limits are investigated.
For typical applications of the gradiomanometer in laboratory two-phase flows, we analyse major c... more For typical applications of the gradiomanometer in laboratory two-phase flows, we analyse major contributions to the measured differential pressure. Application for estimation of the fluid-phase volume fraction is valid only when terms representing friction and differential momentum flux (acceleration) are negligible or can be corrected for. The importance of friction is commonly recognized, but that of acceleration in developing flows is less so. Order-of-magnitude estimates of friction and acceleration are given for typical cases of (i) air/water and (ii) kerosene/water two-phase flows. We point out that the acceleration term could be significant in developing liquid/liquid flows of weak density contrast. For the liquid/liquid case, it is therefore important that measurements be made in a fully developed region of the flow. Results for several multi-phase flows are compared with data from local optical fibre probes in a series of companion articles.
Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious... more Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious agent in tineas and other skin diseases. Drug therapy is considered to be limited in the treatment of such infections, mainly due to low accessibility of the drug to the tissue attacked and development of antifungal resistance in these microorganisms. In this context, Photodynamic Therapy is presented as an alternative. Evaluate, in vitro, the photodynamic activity of four derivatives of Protoporphyrin IX by irradiation with LED 400 nm in T. rubrum. Assays were subjected to irradiation by twelve cycles of ten minutes at five minute intervals. Photodynamic action appeared as effective with total elimination of UFCs from the second irradiation cycle. Studies show that the photodynamic activity on Trichophyton rubrum relates to a suitable embodiment of the photosensitizer, which can be maximized by functionalization of peripheral groups of the porphyrinic ring.
Copyright 2008, Society of Petroleum Engineers This paper was prepared for presentation at the 20... more Copyright 2008, Society of Petroleum Engineers This paper was prepared for presentation at the 2008 SPE Annual Technical Conference and Exhibition held in Denver, Colorado, USA, 2124 September 2008. This paper was selected for presentation by an SPE program ...
International seminars in surgical oncology : ISSO, Jan 7, 2006
This article is a case report of a high grade, radio-induced, breast malignant fibrous histiocyto... more This article is a case report of a high grade, radio-induced, breast malignant fibrous histiocytoma (undifferentiated high grade pleomorphic sarcoma), which developed in a 44-year old female, seven years after breast conservative surgery and radiotherapy for a T1N0M0 invasive left breast ductal carcinoma. The sarcoma presented as a fast growing tumour, 9.5 cm in the largest diameter, with skin, left breast, chest wall muscle and rib invasion. Neoadjuvant chemotherapy was performed with epirubicin and ifosfamide. Extended radical surgery according to oncological standards and soft tissue reconstruction were carried out. Despite bad prognostic features of high grade and large invasive sarcoma, the patient is currently, after 44 months of follow up, without local recurrence, or metastases, exceeding the 12.8-month mean recurrence period and mortality rate for these tumours larger than 8.1 cm (+/- 1.2 cm) as described in the literature.
ABSTRACT The integral transform method is employed for the hybrid numerical-analytical solution o... more ABSTRACT The integral transform method is employed for the hybrid numerical-analytical solution of two-dimensional, steady-state heat conduction within extended surfaces of variable longitudinal profile and temperature dependent thermal conductivity. Numerical results are then obtainable with automatic accuracy, allowing for the establishment of benchmark results and for the validation of approximate solutions. Convergence rates are illustrated for longitudinal fins with trapezoidal and parabolic profiles, and for different values of the governing parameters, Biot number and aspect ratio. In addition, the classical one-dimensional approximate solutions are critically examined for these typical non-straight profiles, and the applicability limits are investigated.
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